ASTROSAT CZTI

Data Quality Report

Orbit 56932

Creation date: 2026-04-06T21:29:02.200399
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A14_083T14_9000006564_56932cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56932cztM0_level2_quad_clean.evt
Size (bytes)903,199,68089,265,600
Size861.4 MB 85.1 MB
Events in quadrant A5,078,900676,885
Events in quadrant B7,427,784689,543
Events in quadrant C3,828,269661,129
Events in quadrant D16,528,065162,025

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200741
B0272831
C0170461
D0540858

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73672773.760011%
B736782711.225736%
C7368660.895765%
D7367585279.435320%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7392 7368 253 253 3.42% 3.43%
B 7392 7368 743 743 10.05% 10.08%
C 7393 7369 66 66 0.89% 0.90%
D 7391 7367 5630 5630 76.17% 76.42%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 7 64 1462141 7776.86 765 747 187.9
A 10 251 412700 2192.22 765 747 187.9
A 3 11 106468 562.6 765 747 187.9
B 5 185 3423903 21659.45 741 714 158.0
B 5 172 694593 4390.36 741 714 158.0
B 10 16 134232 844.8 741 714 158.0
C 13 3 569202 2743.53 749 740 207.2
C 1 12 131275 629.99 749 740 207.2
C 14 246 96811 463.66 749 740 207.2
D 12 33 12388481 86839.89 495 471 142.7
D 2 249 879481 6161.86 495 471 142.7
D 15 142 668715 4684.39 495 471 142.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter